Upending tractor seat



Dec, 19, 1950 H. J. STEWART 2,534,386

UPENDING TRACTOR SEAT Filed Feb. 21, 1949 2 Sheets-Sheet 1 INVENTOR.

BY WM) Dec. 19, 1950 H. J. STEWART UPENDING TRACTOR SEAT 2 Sheets-Sheet 2 Filed Feb. 21, 1949 11v VENTOR.

A. J JZFWJAZ Patented Dec. 19, 1950 sore-Lee UPENDING TRACTOR SEAT Harry J: Stewart, Tripoli-Iowa Application February 21-;"1949;;seriemo. 77,457 (Cl.t155':51)

\ 6 zClaims. 1

This invention relates to upending= tractor seathinges,andaims toprovide certain new and useful improvements -wh'ereby the seat may i be *"readilyiturned backout of 'the-way when' not in use so 'that,'-for=example, the'driver may-stand without obstruction by the tractor platform.

Another *object of the-'dnvention is the provision of a tractor seat-adapted-tobe-turnedback as above-mentioned and having novel and practical means-'for-supporting theseat in-turned-' 3 back position:

still another "object of-"the invention is=-the provision of a tractor seat having-inaddition to"-th'e-*above features, "means forreleasably re- 'taini ng'the seat inits' normal' position.

The above 'as well "as"additional'objectswill be Itis I to therefore neither' 'desirednor intended -to limit the-invention necessarily to any or all of the exact details.-of..,constructionshown except insofar as theymayb'e deemedessential to the in'- -vention:

Referring briefly to the drawings, i:Fig: 1. is a fragmentary perspective view-of; a -tractor seat having the improvements embodied in this in- .vention applied theretoyshowing the seat swung '2 Fig. zfisafra-gmentary perspective View of the 1' seat and" itsassociated parts: showing the seat in normal position:

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 2.

Fig. 5 is a view similar to Fig. 4, showing, however, the hinged seat plate in an intermediate position.

either rigid or hinged, not shown; is a second and approximately S-shapedbar l5 whioh" lies "in the -same vertical plane as:the bar" [3 and 'which is readily'moveable, except for its forward endg not shown; inzthe said'vertical plane. The

bar [5 extends rearward farther than the bar 13.

Pivoted: at its extremities to the free ends of the barsWS-and l5'is'a-telescopic housing l5 adapted tocontain a coiled spring ll normally urging the housing to expand lengthwise or-adapted'to'contain air-under compression-and thus likewise normally urgingoutward expansion of the housing. Thus, the housing lfi serves as:a shock absorber.

Aspiral spring l8' has its'lower end'secured,

" as ioyascrew bolt v[3d, to the lower bar .I 3 and-has ;its upper end secured, as by a screw bolt 18a; to

ahorizontaldisclfi bolted ..to .the bar I5 intermediate the:length of "the. latter. The 'seat'gembodying this invention comprises a pair of rigid plates 20. andi2l .hingedtogether. atone side edge on a pin 22, the former plate being bolted ..to..the.. barj l5'. and. the. latter. plate having the anda-rearawalls 125.and theplate 2! .with sifnilar walls 26, the lengths of the two platesbeingsuch thatrthe-platel! with its walls 25 isadapted to 'fold downzclose against; the plate 2!; with the walls-.26 of: the' for-mer between the walls-.25 of the latter: j The pin 22 registerssnugly inopen- Fig. 6 is a sectional view taken on the line 6-6 of Fi 4.

Fig. '7 is a fragmentary perspective view of the right-hand end of Fig. 5 with the hinged seat panel shown in another intermediate position.

Referring in detail to the drawings, the numeral In indicates a tractor having a portion of the chassis thereof shown at H between the wheels I2. A curved arm or support l3 extends from a forward portion of the chassis or frame, not shown, to which it is rigid, in a rearward direction over the portion I l and has its rearward extremity [4 free. Also extending rearward from the forward portion of the frame to which it is ings 21 through the walls 26 and passes through concentric or aligned slots 28 in the walls 25, these slots extending diagonally, substantially as shown. Aligned cut-outs 29 are provided in the forward extremities of the walls 25, and the corners of the latter are cut away at an angle or beveled, as shown in Fig. 3, to provide cam-like noses 3D. Pegs 3| project in alignment from the forward extremities of the walls 26 and are adapted to register in the cut-outs 29, as will be more clearly set forth below.

The seat 23 is normally in the position shown in Fig. 2 so that the driver may sit on it, and when he desires to stand at the elevation of the tractor platform, he swings the seat and the upper plate 2| to which it is attached, about the axis of the pin 22 into the position shown in Fig. I. When the seat is in the normal position shown in Fig. 2, the plates 28 and 2| are in their respective positions shown in Fig. 4, that is, with the pin 22 in the rear and lowermost position in the slots been provided, which attains the 28 and the pegs 3| registering in the cut-outs 29. In order to swing the seat into the position shown in Fig. 1, the seat and hence the plate 2! is pulled to the right, Fig. 4, into the position shown in Fig. 5, this withdrawing the pegs 3| from the cut-outs 29 and advancing the pin 22 to the forward ends of the slots 28. The forward end of the seat, or rather the right-hand end of the seat, is then swung upward into the position of Fig. I. To return the seat to its normal position, it is simply forcibly swung back, and during its return the pegs 3| will ride over the noses 30 into the cut-outs 29 while the pin 22 moves forward and upward in the slots 28. The seat may then be pushed toward the left, but actually, owing to the slope of the slots 28, as the pegs 3i align with the cut-outs 29 the plate 2| will slide to the left, Figs. 4 and 5. Thus, the seat is securely and releasably locked in its normal position.

After the seat has been swung into the position shown in Fig. 1, as clearly seen in Fig. 3, the lower edge of the plate 2| contacts the rear end of the plate 20 and is stopped thereby and thus prevented from swinging beyond the position shown.

It is apparent from the above that a new and improved pivoted or hinged seat for tractors has objectives of the invention.

Obviously, modifications in form or structure may be made without departing from the spirit or scope of the invention.

I claim:

1. In combination with a vehicle having a seat support thereon, a plate secured in substantially horizontal position on said support, a second plate hinged to said first plate on an axis substantially longitudinally with respect to the vehicle, a seat on said second plate, said second plate being normally positioned substantially horizontall and against said first plate and being adapted to be swung about said axis through an arc of at least ninety degrees, and said plates providing limit stop means for limiting the length of said arc.

2. The combination set forth in claim 1, said plates having means for mutually interlocking the same in the normally horizontal position of said second plate.

3. A seat comprising a support, a plate secured to said support in substantially horizontal position, said plate having opposed upstanding walls on the front and rear edges thereof, a sec- 0nd plate having opposed front and rear walls extending from opposed edges thereof, the distance between said walls of said second plate being less than the distance between said walls of said first plate, said second plate having substantially circular aligned openings through the said walls thereof near one end of the plate, said first plate having aligned diagonal slots through the said walls thereof near one end of the plate, a hinge pin passing through said openings and said slots with said walls of said second plate registering between said walls of said first plate thereby hinging said plates together at one end, the forward extremities of said walls of said first plate having aligned cut-outs therein, the forward extremities of said walls of said second plate having aligned pegs extending outward therefrom and adapted to register in said aligned cut-outs when said second plate is folded down upon said first plate thereby mutually interlocking said plates.

4. The seat set forth in claim 3 wherein said plates provide stop means for limiting the arc of movement of said second plate with respect to said first plate when said second plate is swung out of said folded down position thereof.

5. The seat set forth in claim 3, the forward extremities of said walls of said first plate having the upper corners thereof beveled thereby providing cam-like noses for said pegs to ride on while said second plate is being folded down into interlocking position with respect to said first plate.

6. The seat set forth in claim 3, the distance between said circular openings and said one end of said second plate and the distance between the bases of said slots and said first plate both being such that upon swinging said second plate through an arc of at least ninety degrees the said one end of said second plate meets said first plate thereby providing a limit stop to the said swinging of said second plate.

HARRY J. STEWART.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 533,300 Josselyn Jan. 29, 1895 709,619 Wangerin Sept. 23, 1902 895,042 Rogers Aug. 4, 1908 2,269,968 Baker 1 Jan. 13, 1942 

